As the oven warms up, the delightful aroma of buttery bliss fills the kitchen. Today, I’m thrilled to share my latest obsession: Rhubarb Macadamia Blondies. These little squares are a perfect harmony of textures and flavors, with creamy white chocolate mingling with crunchy macadamias and a tangy pop of rhubarb. Not only are they easy to whip up in just an hour, but they also make for a fantastic treat that will impress anyone lucky enough to snag a piece. Whether you’re seeking a sweet finish to dinner or a special treat for your next gathering, these blondies are sure to steal the spotlight. Are you ready to elevate your dessert game and indulge in something truly irresistible?

Why are Rhubarb Macadamia Blondies a Must-Try?
Irresistible Flavor: Each bite bursts with the perfect balance of tart rhubarb, creamy white chocolate, and the crunch of macadamia nuts, creating a delightful contrast that will keep you coming back for more.
Quick and Easy: With total prep and bake time under an hour, these blondies are simple to make, making them ideal for both novice cooks and seasoned chefs.
Crowd-Pleasing Treat: Whether served at a family gathering or a cozy dinner with friends, these blondies will definitely impress your guests.
Versatile Ingredients: Feel free to experiment by swapping rhubarb for your favorite fruit or adjusting sweetness levels to suit your taste. For more ideas, check out our alternatives for a personalized twist!
Treat Yourself: Whether enjoyed with a cup of coffee or paired with a scoop of ice cream, these blondies are a must-have, making any moment feel a bit more special.
Rhubarb Macadamia Blondies Ingredients
For the Batter
• 100g unsalted butter, chopped – Adds richness and moisture; can substitute with coconut oil for a dairy-free option.
• 100g white chocolate, finely chopped + 150g extra – Infuses sweetness and creaminess; dark chocolate can be used for a richer flavor.
• 1 cup firmly packed brown sugar – Provides sweetness and a hint of molasses; coconut sugar offers a lower glycemic index alternative.
• 2 free-range eggs – Acts as a binder and enhances richness; flaxseed meal mixed with water serves as a vegan substitute.
• 3/4 cup plain flour – Gives structure and stability to the blondies; whole wheat flour can boost fiber content.
For the Add-ins
• 1/2 cup roughly chopped Australian macadamias – Introduces a delightful crunch and nutty flavor; pecans or walnuts can be swapped for variety.
• 3 stalks rhubarb, cut into 2cm pieces – Delivers tartness to balance the sweetness; fresh or frozen rhubarb works beautifully in this recipe.
Dive into this delectable journey of Rhubarb Macadamia Blondies and let your baking adventure begin!
Step‑by‑Step Instructions for Rhubarb Macadamia Blondies
Step 1: Preheat and Prepare
Start by preheating your oven to 160°C fan-forced (180°C conventional). While it warms, grease and line a 20 x 30cm lamington pan with baking paper, ensuring the paper hangs over the edges for easy removal later. This preparation sets the stage for your delightful Rhubarb Macadamia Blondies.
Step 2: Melt the Butter and Chocolate
In a medium saucepan, melt 100g of chopped unsalted butter over medium heat. Stir it gently until it becomes foaming and takes on a golden hue, about 5 minutes. Remove it from the heat and mix in 100g of finely chopped white chocolate, stirring until completely smooth. Allow the mixture to cool for 10 minutes before proceeding.
Step 3: Mix Sugar and Eggs
In a mixing bowl, beat together 1 cup of firmly packed brown sugar and 2 free-range eggs until the mixture is thick and pale, approximately 2-3 minutes. This aeration creates a fluffy texture in your blondies. Once combined, gradually add the cooled butter-chocolate mixture and mix until everything is well blended.
Step 4: Combine Dry Ingredients
Gently fold in 3/4 cup of plain flour until just incorporated into the mixture—be careful not to overmix. Next, add three-quarters of the remaining white chocolate, roughly chopped macadamias (1/2 cup), and diced rhubarb (cut into 2cm pieces). This step introduces the delightful flavors of the Rhubarb Macadamia Blondies to the batter.
Step 5: Pour and Decorate
Pour the batter into the prepared lamington pan, smoothing the top to ensure even baking. To finish, sprinkle the remaining white chocolate, macadamias, and rhubarb on top. This beautiful layering adds visual appeal and a burst of flavor to the final bake.
Step 6: Bake
Carefully place the pan in the preheated oven and bake for 35-40 minutes. Keep an eye on them, and look for a golden top; a toothpick inserted into the center should come out mostly clean but slightly moist. This indicates the blondies are perfectly done, offering that lovely chewy texture.
Step 7: Cool and Serve
Once baked, remove the pan from the oven and let the Rhubarb Macadamia Blondies cool in the pan for 1 hour. After they have cooled, lift them out using the baking paper and cut into squares. Store in an airtight container or enjoy them fresh, relishing every sweet, tangy bite!

How to Store and Freeze Rhubarb Macadamia Blondies
Room Temperature: Keep the blondies in an airtight container at room temperature for up to 4 days. This helps maintain their delightful texture and flavor, ensuring they’re ready for your sweet cravings.
Fridge: If you want them to last longer, store the blondies in the fridge for up to 1 week. Make sure they’re in a well-sealed container to prevent them from drying out.
Freezer: You can freeze the blondies for up to 3 months. Wrap each piece individually in plastic wrap and then place them in a freezer-safe bag or container to avoid freezer burn.
Reheating: To enjoy your frozen blondies, simply thaw them in the fridge overnight and warm them briefly in a microwave for a few seconds for that fresh-baked goodness.
Expert Tips for Rhubarb Macadamia Blondies
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Watch the Butter: Ensure the butter is foaming but not burning for optimal flavor. Pay close attention near the end to avoid any bitterness.
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Cool Down: Let the butter-chocolate mixture cool before adding the eggs to prevent curdling. This step is crucial for achieving a fluffy texture in your blondies.
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Don’t Overmix: When folding in the flour, mix until just incorporated to maintain a soft, chewy center in your Rhubarb Macadamia Blondies. Overmixing can lead to a dense texture.
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Ingredient Temperatures: Room temperature eggs incorporate better, leading to an even batter. Take the eggs out of the fridge in advance!
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Store Correctly: For the best texture, store blondies in an airtight container. They can last up to 4 days at room temperature, ensuring freshness for your sweet treats!
Rhubarb Macadamia Blondies Variations
Feel free to let your creativity shine and customize your blondies with these delightful variations!
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Dairy-Free: Swap unsalted butter with coconut oil and use dairy-free chocolate for a creamy yet guilt-free treat. Dairy-free options make these blondies suitable for everyone!
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Berry Bliss: Substitute rhubarb with an equal amount of chopped strawberries or blueberries for a sweeter twist. The berries bring a lush juiciness that makes each bite sing with summer freshness.
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Nutty Alternatives: Replace macadamias with pecans or walnuts for a different nutty profile. Not only do they add unique textures, but they also complement the sweetness beautifully.
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Whole Wheat Boost: Use whole wheat flour instead of plain flour for added fiber and a nutty flavor. It’ll provide a wholesome depth while enhancing the chewiness of your blondies.
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Less Sweet Option: Reduce the amount of brown sugar or substitute with coconut sugar for a lower-glycemic version. You’ll maintain a delicious flavor while making these blondies a touch healthier.
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Spicy Kick: Add a pinch of cinnamon or nutmeg for a warm, aromatic touch. These spices beautifully complement the sweetness of the chocolate and the tartness of the rhubarb.
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Caramel Drizzle: Drizzle warm caramel sauce over the cooled blondies before serving for an indulgent finish. The gooey sweetness of caramel will elevate your dessert to heavenly levels!
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Chilled Treats: Refrigerate the baked blondies to enjoy a refreshing dessert on hot days. They make a wonderful contrast with the warmth of a sunny afternoon, especially paired with a scoop of vanilla ice cream!
Feel free to mix and match these variations to suit your mood and impress your loved ones! For more flavor inspirations, check our alternatives to explore endless delicious possibilities in your baking journey.
What to Serve with Rhubarb Macadamia Blondies
As you indulge in these delightful blondies, consider pairing them with complementary treats that enhance the flavor experience.
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Vanilla Ice Cream: The creamy richness of vanilla ice cream perfectly balances the tangy rhubarb, creating a luscious dessert duo that melts in your mouth.
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Fresh Berries: Serve with a side of mixed fresh berries for a juicy burst of flavor. Their natural sweetness brightens each bite, lifting the overall taste.
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Dark Chocolate Drizzle: A drizzle of rich dark chocolate adds a decadent finish that contrasts beautifully with the blondies’ sweetness, making each bite even more indulgent.
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Whipped Cream: Light and airy whipped cream on top can elevate your blondies to new heights, providing a fluffy counterpart to their dense texture.
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Coffee or Tea: A steaming cup of coffee or herbal tea complements the flavors beautifully, allowing you to savor every sweet and tangy bite while enjoying a moment of relaxation.
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Lemon Curd: A dollop of tangy lemon curd introduces a zesty flavor profile that harmonizes with the rhubarb, creating a refreshing twist that’s simply irresistible.
Experiment with these pairings to create a delightful dessert experience that will have everyone asking for seconds!
Make Ahead Options
These Rhubarb Macadamia Blondies are a fantastic option for meal prep, saving you time on busy days! You can prepare the batter up to 24 hours in advance; simply mix the ingredients and store the batter in an airtight container in the refrigerator. This not only enhances the flavors but also ensures a quick bake when you’re ready to enjoy your blondies. Additionally, you can cut the baked blondies into squares and refrigerate them for up to 3 days, keeping them perfectly moist and delicious. When ready to serve, just warm them slightly in the microwave for a few seconds (to bring back that melted chocolate goodness) and enjoy the delightful taste of homemade Rhubarb Macadamia Blondies without any extra fuss!

Rhubarb Macadamia Blondies Recipe FAQs
What should I look for when selecting rhubarb?
When choosing rhubarb, look for firm stalks that are a vibrant red or green color. Avoid any that have dark spots, wilting, or a slimy texture, as these are signs of spoilage. Fresh rhubarb is ideal, but you can also use frozen rhubarb if fresh isn’t available; just be sure to thaw and drain excess moisture before adding it to your batter.
How should I store Rhubarb Macadamia Blondies?
Store your blondies in an airtight container at room temperature for up to 4 days. If you prefer them chilled, they can safely last in the fridge for about a week. Ensure the container is well-sealed to prevent them from drying out or absorbing other flavors.
Can I freeze Rhubarb Macadamia Blondies?
Absolutely! To freeze your blondies, wrap each piece individually in plastic wrap, then place them in a freezer-safe bag or container. They can be frozen for up to 3 months. When you’re ready to enjoy them, simply thaw in the fridge overnight, then warm briefly in the microwave for a delightful fresh-baked taste.
What can I do if my blondies turn out too dry?
If your blondies are dry, it might be due to overmixing the batter or baking them too long. To remedy this in the future, follow the mixing instructions carefully, folding in the flour just until combined and checking for doneness after 35 minutes. If they are already dry, you can serve them with a scoop of ice cream or a drizzle of cream to add moisture and enhance the flavor.
Are Rhubarb Macadamia Blondies suitable for those with nut allergies?
It’s important to keep your guests’ dietary needs in mind. Since this recipe includes macadamia nuts, you can substitute them with seeds like pumpkin or sunflower seeds, or simply omit the nuts entirely for a nut-free option. Just ensure that none of your other ingredients (like the chocolate) contain traces of nuts to avoid cross-contamination.
What’s the best way to reheat frozen blondies?
To reheat your frozen blondies, first, allow them to thaw in the fridge overnight. Once thawed, place them in the microwave for about 10-15 seconds to warm them up slightly. Alternatively, you can enjoy them at room temperature for a softer texture without any reheating.

Rhubarb Macadamia Blondies: Sweet, Tangy Bliss Awaits
Ingredients
Equipment
Method
- Preheat oven to 160°C fan-forced (180°C conventional) and prepare a 20 x 30cm lamington pan with baking paper.
- Melt the butter in a medium saucepan over medium heat until foaming and golden, about 5 minutes. Mix in 100g of white chocolate until smooth and let cool for 10 minutes.
- Beat brown sugar and eggs together until thick and pale, about 2-3 minutes. Gradually add the cooled butter-chocolate mixture and mix well.
- Fold in plain flour until just incorporated. Add white chocolate, macadamias, and rhubarb, combining gently.
- Pour batter into the prepared pan, smoothing the top, and sprinkle the remaining white chocolate, macadamias, and rhubarb on top.
- Bake for 35-40 minutes until the top is golden. A toothpick inserted should come out mostly clean but slightly moist.
- Cool in the pan for 1 hour before lifting out and cutting into squares.

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